<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <script src="https://cdn.staticfile.org/react/16.4.0/umd/react.development.js"></script>
    <script src="https://cdn.staticfile.org/react-dom/16.4.0/umd/react-dom.development.js"></script>
    <!-- 生产环境中不建议使用 -->
    <script src="https://cdn.staticfile.org/babel-standalone/6.26.0/babel.min.js"></script>
</head>

<body>
    <div id="app"></div>

</body>
<script type="text/babel">
    function show(v,min,max){
        console.log(v,min,max)
        if (v< parseInt(min)) {
            return <h1>水结冰了</h1>
        }else if (v>=parseInt(max)) {
            return <h1>水烧开了</h1>
        }else{
            return <h1>水正在加热中~~</h1>
        }
    }

    class Water extends React.Component{
        constructor(){
            super()
            this.state={
                WD: -1,
            }
        }

        changed(e){
            this.setState({
                WD:e.target.value
            })
        }

        render(){
            return (<div>
                        <input type="number" onChange={this.changed.bind(this)} defaultValue={this.state.WD}/>
                        {show(this.state.WD, this.props.min, this.props.max)}
                    </div>)
        }
    }


    ReactDOM.render(<Water min='0' max='80'/>,app)
    
</script>

</html>